I have found that the Euclid's default settings mean that it has trouble seeing small-ish objects (12 x 12 cm, 4cm high) at less than 1m. By trouble, I mean the data is missing/black in the depth image where the object should be. Only when the camera is moved back to about 1 or 1.1m away, does the object finally appear in the depth image data.

Is this something that changing the depth gain or providing an ambient IR flood light might help with? I played with the depth and exposure parameters of the R200 way back, and it did help with similar circumstances, just not sure if the Euclid's camera technology/settings work in the same way, or if someone else has found a good combination of these parameters for their own projects.

Using the software API (in my case, Librealsense in linux) you enable/start the stream either by specifying all of the settings manually, or what I do is choose rs::preset::highest_framerateand it automatically goes down to 320x240 resolution and 60 fps.